Bluewater 300A Off/1/2 Marine Battery Selector Switch

The Bluewater selector switch gives an operator direct manual control over which onboard battery bank is connected to the load. It provides separate bank selections plus a full isolation position, making it useful for boats, RVs, and service vehicles that need a simple manual battery strategy. Ignition-protected construction allows the switch to be used in gasoline-powered marine applications when installed correctly. Tactile knob surfaces also help the operator identify the selected position by feel when visibility is limited.

The electrical connections use 3/8-16 tin-plated copper studs for conductivity and corrosion resistance. Those studs accept both 3/8 in and M10 ring terminals, and the extended stud length allows more than one properly installed cable terminal where the system design requires it. Marine-grade, non-corrosive metal components are used throughout the current path to support reliable service in a damp environment. International ON/OFF legends and an icon label set are included so the installer can mark the finished panel clearly.

• Manual selection between primary and secondary battery banks
• Ignition-protected for appropriate gasoline-powered vessel installations
• 3/8-16 tin-plated copper terminal studs
• Includes international legends and circuit-identification icons

The switch should be mounted where the operator can reach it easily but heavy battery cables can still be routed with gentle bends and solid support. Cable size, terminal stacking, and overcurrent protection should follow the needs of the vessel battery system rather than the physical space available on the studs. For related isolation, switching, and battery-control equipment, browse Battery Switches.